Airlines have increased domestic fares in time for the Christmas period.
USA Today reports Delta Air Lines was the first to increase fares, by $4-$10 roundtrip – a move that was followed by other airlines.
The report says this fare hike is the 12th this year, although only three have been successful.
Last year, there were 15 attempts to raise fares, and seven were successful.
USA Today quotes Rick Seaney, CEO of fare tracking site FareCompare.com saying: "Domestic airlines have had little success raising base airfares in 2013 as consolidation and the transition to 90% load factors continue."
The last time an airline was able to raise fares in December was 2010 when oil prices were in the low $90s, according to Seaney.
He claims that air fare increases only success if low-cost carriers follow suit.
In this case, Southwest Airlines, JetBlue and others have not raised their fares.
